## ## This file is part of the sigrok project. ## ## Copyright (C) 2015 Uwe Hermann ## Copyright (C) 2019 XIAO Xufeng ## ## This program is free software; you can redistribute it and/or modify ## it under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 2 of the License, or ## (at your option) any later version. ## ## This program is distributed in the hope that it will be useful, ## but WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with this program; if not, write to the Free Software ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ## # Modified from sd_card decoder/pd.py import sigrokdecode as srd from .lists import * from .sd_crc import crc7, crc16 import traceback class Decoder(srd.Decoder): api_version = 3 id = 'sdio' name = 'SDIO' longname = 'Secure Digital I/O' desc = 'Secure Digital I/O low-level protocol.' license = 'gplv2+' inputs = ['logic'] outputs = ['sdio'] tags = ['Memory'] channels = ( {'id': 'cmd', 'name': 'CMD', 'desc': 'Command'}, {'id': 'clk', 'name': 'CLK', 'desc': 'Clock'}, ) optional_channels = ( {'id': 'dat0', 'name': 'DAT0', 'desc': 'Data pin 0'}, {'id': 'dat1', 'name': 'DAT1', 'desc': 'Data pin 1'}, {'id': 'dat2', 'name': 'DAT2', 'desc': 'Data pin 2'}, {'id': 'dat3', 'name': 'DAT3', 'desc': 'Data pin 3'}, ) options = ( { 'id' : 'lines', 'desc' : 'Lines used', 'default' : '1-line', 'values' : ('1-line', '4-line') }, { 'id' : 'io_block_len', 'desc' : 'Block size of SDIO', 'default' : '512', 'values' : ('128', '256','512','1024') }, { 'id' : 'polarity', 'desc' : 'Sample edge', 'default' : 'risedge', 'values' : ('risedge', 'falledge') }, ) # 00-63 CMD # 64-127 ACMD # 128 Bits # 129 field-start # 130 field-transmission # 131 field-cmd # 132 field-arg # 133 field-crc # 134 field-end # 135 decoded-bits # 136 decoded-fields # 137 data # 138 data-field # 139 data-busy # 140 data-field-error annotations = \ tuple(('cmd%d' % i, 'CMD%d' % i) for i in range(64)) + \ tuple(('acmd%d' % i, 'ACMD%d' % i) for i in range(64)) + ( \ ('bits', 'Bits'), ('field-start', 'Start bit'), ('field-transmission', 'Transmission bit'), ('field-cmd', 'Command'), ('field-arg', 'Argument'), ('field-crc', 'CRC'), ('field-end', 'End bit'), ('decoded-bit', 'Decoded bit'), ('decoded-field', 'Decoded field'), ('data', 'Data'), ('data-field', 'Data fields'), ('data-busy', 'Data busy'), ('data-field-error', 'Data fields (Error)'), ('message', 'Messages'), ) annotation_rows = ( ('datas', 'Datas Line', tuple(range(137,141))), ('raw-bits', 'Raw bits', (128,)), ('decoded-bits', 'Decoded bits', (135,)), ('decoded-fields', 'Decoded fields', (136,)), ('fields', 'Fields', tuple(range(129, 135))), ('cmd', 'Commands', tuple(range(128))), ('msg', 'Messages', (141,)), ) #supported commands cmd_list = (0, 2, 3, 5, 6, 7, 8, 9, 10, 13, 16, 52, 53, 55) acmd_list = (6, 13, 41, 51) def __init__(self): self.state = 'GET COMMAND TOKEN' self.token = [] self.oldpins = None self.oldclk = None self.is_acmd = False # Indicates CMD vs. ACMD self.cmd = None self.arg = None self.four_line = False self.data_received = [] self.data_bytes_required = 512 self.data_crc_resp = False self.data_state = 'IDLE' def start(self): self.out_ann = self.register(srd.OUTPUT_ANN) self.four_line = self.options['lines']=='4-line' self.rise_sample = self.options['polarity']=='risedge' self.io_block_len = int(self.options['io_block_len']) # draw data def putd(self, s, e, data): self.put(s, e, self.out_ann, [137, data]) # draw normal data fields def putdf(self, s, e, data, normal): if normal: self.put(s, e, self.out_ann, [138, data]) else: self.put(s, e, self.out_ann, [140, data]) # draw busy def putdb(self, s, e, data): self.put(s, e, self.out_ann, [139, data]) def putbit(self, b, data): self.put(self.token[b][0], self.token[b][1], self.out_ann, [135, data]) def putt(self, data): self.put(self.token[0][0], self.token[47][1], self.out_ann, data) def putt2(self, data): self.put(self.token[47][0], self.token[0][1], self.out_ann, data) def putf(self, s, e, data): self.put(self.token[s][0], self.token[e][1], self.out_ann, data) def puta(self, s, e, data): self.put(self.token[47 - 8 - e][0], self.token[47 - 8 - s][1], self.out_ann, data) def putc(self, cmd, desc): self.putt([cmd, ['%s: %s' % (self.cmd_str, desc), self.cmd_str, self.cmd_str.split(' ')[0]]]) def putr(self, cmd, desc): self.putt([cmd, ['Reply: %s' % desc]]) def putr2(self, cmd, desc): self.putt2([cmd, ['Reply: %s' % desc]]) def putlog(self, msg): self.put(self.samplenum, self.samplenum+100, self.out_ann, [141, [msg]]) def reset(self): self.cmd, self.arg = None, None self.token, self.state = [], 'GET COMMAND TOKEN' def cmd_name(self, cmd): c = acmd_names if self.is_acmd else cmd_names return c.get(cmd, 'Unknown') def get_token_bits(self, cmd, n): # Get a bit, return True if we already got 'n' bits, False otherwise. self.token.append([self.samplenum, self.samplenum, cmd]) if len(self.token) > 0: self.token[len(self.token) - 2][1] = self.samplenum if len(self.token) < n: return False self.token[n - 1][1] += self.token[n - 1][0] - self.token[n - 2][0] return True def get_token_data(self, start, end): return int('0b' + ''.join([str(self.token[i][2]) for i in range(start, end+1)]), 2) def handle_common_token_fields(self): s = self.token self.crc = self.get_token_data(40, 46) # Annotations for each individual bit. for bit in range(len(self.token)): self.putf(bit, bit, [128, ['%d' % s[bit][2]]]) # CMD[47:47]: Start bit (always 0) self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) # CMD[46:46]: Transmission bit (1 == host) t = 'host' if s[1][2] == 1 else 'card' self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) # CMD[45:40]: Command index (BCD; valid: 0-63) self.cmd = int('0b' + ''.join([str(s[i][2]) for i in range(2, 8)]), 2) c = '%s (%d)' % (self.cmd_name(self.cmd), self.cmd) self.putf(2, 7, [131, ['Command: ' + c, 'Cmd: ' + c, 'CMD%d' % self.cmd, 'Cmd', 'C']]) # CMD[39:08]: Argument self.putf(8, 39, [132, ['Argument', 'Arg', 'A']]) # CMD[07:01]: CRC7 bit_array = [s[i][2] for i in range(0,40)] crc_cal = crc7(bit_array) if crc_cal != self.crc: self.putf(40, 46, [133, ['CRC Error: 0x%x(should be 0x%x)' % (self.crc,crc_cal), 'CRC Error', 'Error', 'E']]) else: self.putf(40, 46, [133, ['CRC: 0x%x' % self.crc, 'CRC', 'C']]) # CMD[00:00]: End bit (always 1) self.putf(47, 47, [134, ['End bit', 'End', 'E']]) def handle_cmd0(self): # CMD0 (GO_IDLE_STATE) -> no response self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(0, 'Reset all SD cards') self.token, self.state = [], 'GET COMMAND TOKEN' def handle_cmd2(self): # CMD2 (ALL_SEND_CID) -> R2 self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(2, 'Ask card for CID number') self.token, self.state = [], 'GET RESPONSE R2' def handle_cmd3(self): # CMD3 (SEND_RELATIVE_ADDR) -> R6 self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(3, 'Ask card for new relative card address (RCA)') self.token, self.state = [], 'GET RESPONSE R6' def handle_cmd5(self): # CMD5 (IO_SEND_OP_COND) -> R4 self.puta(25, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.puta(24, 24, [136, ['Switching to 1.8V Request', 'Switch to 1.8V', 'S18R']]) self.puta(0, 23, [136, ['Operation Conditions Register', 'I/O OCR', 'OCR']]) self.putc(5, 'SDIO send operation conditions') self.token, self.state = [], 'GET RESPONSE R4' def handle_cmd6(self): # CMD6 (SWITCH_FUNC) -> R1 self.putc(6, 'Switch/check card function') self.token, self.state = [], 'GET RESPONSE R1' def handle_cmd7(self): # CMD7 (SELECT/DESELECT_CARD) -> R1b self.putc(7, 'Select / deselect card') rca = self.get_token_data(8, 23) self.puta(16, 31, [136, ['Relative card address 0x%X'%rca, 'Relative card address', 'RCA', 'R']]) self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.token, self.state = [], 'GET RESPONSE R1b' def handle_cmd8(self): # CMD8 (SEND_IF_COND) -> R7 self.puta(12, 31, [136, ['Reserved', 'Res', 'R']]) self.puta(8, 11, [136, ['Supply voltage', 'Voltage', 'VHS', 'V']]) self.puta(0, 7, [136, ['Check pattern', 'Check pat', 'Check', 'C']]) self.putc(0, 'Send interface condition to card') self.token, self.state = [], 'GET RESPONSE R7' # TODO: Handle case when card doesn't reply with R7 (no reply at all). def handle_cmd9(self): # CMD9 (SEND_CSD) -> R2 self.puta(16, 31, [136, ['RCA', 'R']]) self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(9, 'Send card-specific data (CSD)') self.token, self.state = [], 'GET RESPONSE R2' def handle_cmd10(self): # CMD10 (SEND_CID) -> R2 self.puta(16, 31, [136, ['RCA', 'R']]) self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(9, 'Send card identification data (CID)') self.token, self.state = [], 'GET RESPONSE R2' def handle_cmd13(self): # CMD13 (SEND_STATUS) -> R1 self.puta(16, 31, [136, ['RCA', 'R']]) self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(13, 'Send card status register') self.token, self.state = [], 'GET RESPONSE R1' def handle_cmd16(self): # CMD16 (SET_BLOCKLEN) -> R1 self.blocklen = self.arg self.puta(0, 31, [136, ['Block length', 'Blocklen', 'BL', 'B']]) self.putc(16, 'Set the block length to %d bytes' % self.blocklen) self.token, self.state = [], 'GET RESPONSE R1' def handle_cmd52(self): # CMD52 (IO_RW_DIRECT) -> R5 self.puta(31, 31, [136, ['R/W flag','Write','R/W','W']]) self.puta(28, 30, [136, ['Funtion number','Function','FN','F']]) self.puta(27, 27, [136, ['RAW flag','RAW','R']]) self.puta(26, 26, [136, ['Stuff bit','Stuff','SB']]) self.puta(9, 25, [136, ['Register address','Address','Addr','A']]) self.puta(8, 8, [136, ['Stuff bit','Stuff','SB']]) self.puta(0, 7, [136, ['Write data or stuff bits','Write data','Data','D']]) self.putc(52, 'SDIO Read/Write Direct') self.puta(31, 31, [135, ['W' if self.arg&0x80000000 else 'R']]) self.puta(28, 30, [135, [str((self.arg>>28)&7)]]) self.puta(9, 25, [135, [hex((self.arg>>9)&0x1ffff)]]) self.puta(0, 7, [135, [hex(self.arg&0xff)]]) self.token, self.state = [], 'GET RESPONSE R5' def handle_cmd53(self): # CMD53 (IO_RW_EXTENDED) -> R5 self.puta(31, 31, [136, ['R/W flag','Write','R/W','W']]) self.puta(28, 30, [136, ['Funtion number','Function','FN','F']]) self.puta(27, 27, [136, ['Block mode','Block','BM']]) self.puta(26, 26, [136, ['OP code (increasing addr)','OP code','OP']]) self.puta(9, 25, [136, ['Register address','Address','Addr','A']]) self.puta(0, 8, [136, ['Byte/Block count','Count','C']]) self.putc(52, 'SDIO Read/Write Extended') self.puta(31, 31, [135, ['W' if self.arg&0x80000000 else 'R']]) self.puta(28, 30, [135, [str((self.arg>>28)&7)]]) self.puta(9, 25, [135, [hex((self.arg>>9)&0x1ffff)]]) self.puta(0, 8, [135, [hex(self.arg&0x1ff)]]) self.token, self.state = [], 'GET RESPONSE R5' if not (self.arg & 0x08000000): #block mode self.data_bytes_required = self.arg&0x1ff self.data_crc_resp = (self.arg&0x80000000 !=0) else: #byte mode self.data_bytes_required = self.io_block_len self.data_crc_resp = (self.arg&0x80000000 !=0) def handle_cmd55(self): # CMD55 (APP_CMD) -> R1 self.puta(16, 31, [136, ['RCA', 'R']]) self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(55, 'Next command is an application-specific command') self.is_acmd = True self.token, self.state = [], 'GET RESPONSE R1' def handle_acmd6(self): # ACMD6 (SET_BUS_WIDTH) -> R1 self.putc(64 + 6, 'Read SD config register (SCR)') self.token, self.state = [], 'GET RESPONSE R1' def handle_acmd13(self): # ACMD13 (SD_STATUS) -> R1 self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) self.putc(64 + 13, 'Set SD status') self.token, self.state = [], 'GET RESPONSE R1' def handle_acmd41(self): # ACMD41 (SD_SEND_OP_COND) -> R3 self.puta(0, 23, [136, ['VDD voltage window', 'VDD volt', 'VDD', 'V']]) self.puta(24, 24, [136, ['S18R']]) self.puta(25, 27, [136, ['Reserved', 'Res', 'R']]) self.puta(28, 28, [136, ['XPC']]) self.puta(29, 29, [136, ['Reserved for eSD', 'Reserved', 'Res', 'R']]) self.puta(30, 30, [136, ['Host capacity support info', 'Host capacity', 'HCS', 'H']]) self.puta(31, 31, [136, ['Reserved', 'Res', 'R']]) self.putc(64 + 41, 'Send HCS info and activate the card init process') self.token, self.state = [], 'GET RESPONSE R3' def handle_acmd51(self): # ACMD51 (SEND_SCR) -> R1 self.putc(64 + 51, 'Read SD config register (SCR)') self.token, self.state = [], 'GET RESPONSE R1' self.data_bytes_required = 8 self.data_crc_resp = False def handle_cmd999(self): self.token, self.state = [], 'GET RESPONSE R1' def handle_acmd999(self): self.token, self.state = [], 'GET RESPONSE R1' # Response tokens can have one of four formats (depends on content). # They can have a total length of 48 or 136 bits. # They're sent serially (MSB-first) by the card that the host # addressed previously, or (synchronously) by all connected cards. def handle_response_r1(self, cmd): # R1: Normal response command # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (0 == card) # - Bits[45:40]: Command index (BCD; valid: 0-63) # - Bits[39:08]: Card status # - Bits[07:01]: CRC7 # - Bits[00:00]: End bit (always 1) if not self.get_token_bits(cmd, 48): return self.handle_common_token_fields() self.putr(55, 'R1') self.puta(0, 31, [136, ['Card status', 'Status', 'S']]) for i in range(32): self.putbit(8 + i, [card_status[31 - i]]) self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r1b(self, cmd): # R1b: Same as R1 with an optional busy signal (on the data line) if not self.get_token_bits(cmd, 48): return self.handle_common_token_fields() self.puta(0, 31, [136, ['Card status', 'Status', 'S']]) self.putr(55, 'R1b') self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r2(self, cmd): # R2: CID/CSD register # - Bits[135:135]: Start bit (always 0) # - Bits[134:134]: Transmission bit (0 == card) # - Bits[133:128]: Reserved (always 0b111111) # - Bits[127:001]: CID or CSD register including internal CRC7 # - Bits[000:000]: End bit (always 1) if not self.get_token_bits(cmd, 136): return # Annotations for each individual bit. for bit in range(len(self.token)): self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]]) self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) t = 'host' if self.token[1][2] == 1 else 'card' self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) self.putf(2, 7, [131, ['Reserved', 'Res', 'R']]) self.putf(8, 134, [132, ['Argument', 'Arg', 'A']]) self.putf(135, 135, [134, ['End bit', 'End', 'E']]) self.putf(8, 134, [136, ['CID/CSD register', 'CID/CSD', 'C']]) self.putf(0, 135, [55, ['R2']]) self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r3(self, cmd): # R3: OCR register # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (0 == card) # - Bits[45:40]: Reserved (always 0b111111) # - Bits[39:08]: OCR register # - Bits[07:01]: Reserved (always 0b111111) # - Bits[00:00]: End bit (always 1) if not self.get_token_bits(cmd, 48): return self.putr(55, 'R3') # Annotations for each individual bit. for bit in range(len(self.token)): self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]]) self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) t = 'host' if self.token[1][2] == 1 else 'card' self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) self.putf(2, 7, [131, ['Reserved', 'Res', 'R']]) self.putf(8, 39, [132, ['Argument', 'Arg', 'A']]) self.putf(40, 46, [133, ['Reserved', 'Res', 'R']]) self.putf(47, 47, [134, ['End bit', 'End', 'E']]) self.puta(0, 31, [136, ['OCR register', 'OCR reg', 'OCR', 'O']]) self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r4(self, cmd): # R4: I/O OCR # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (0 == card) # - Bits[45:40]: Reserved (always 0b111111) # - Bits[39:39]: Card ready # - Bits[38:36]: Number of I/O functions # - Bits[35:35]: Memory present # - Bits[34:33]: Stuff bits # - Bits[32:32]: Switching to 1.8V accepted # - Bits[31:08]: I/O operating conditions register # - Bits[07:01]: Reserved (always 0b111111) # - Bits[00:00]: End bit (always 1) if not self.get_token_bits(cmd, 48): return self.putr(55, 'R4') # Annotations for each individual bit. for bit in range(len(self.token)): self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]]) self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) t = 'host' if self.token[1][2] == 1 else 'card' self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) self.putf(2, 7, [131, ['Reserved', 'Res', 'R']]) self.putf(8, 39, [132, ['Argument', 'Arg', 'A']]) self.putf(40, 46, [133, ['Reserved', 'Res', 'R']]) self.putf(47, 47, [134, ['End bit', 'End', 'E']]) self.puta(31, 31, [136, ['Card ready', 'ready', 'C']]) self.puta(28, 30, [136, ['Number of I/O functions','n.o. I/O functions','NIF']]) self.puta(27, 27, [136, ['Memory present','MP','M']]) self.puta(25, 26, [136, ['Stuff bits','SB','S']]) self.puta(24, 24, [136, ['Switching to 1.8V accepted','Switch to 1.8V','S18A']]) self.puta(0, 23, [136, ['I/O operating conditions register','I/O OCR','OCR']]) self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r5(self, cmd): # R5: # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (0 == card) # - Bits[45:40]: Command index (always 0b000011) # - Bits[39:24]: Stuff bits # - Bits[23:16]: Response flags # - Bits[15:08]: Read or write data # - Bits[07:01]: CRC7 # - Bits[00:00]: End bit (always 1) if not self.get_token_bits(cmd, 48): return self.cal_arg() self.handle_common_token_fields() self.puta(0, 7, [136, ['Read or write data','Data','D']]) self.puta(8, 15, [136, ['Response flags','Response','R']]) self.puta(16,31, [136, ['Stuff bits','SB','S']]) self.putr(55, 'R5') self.puta(0, 7, [135, [hex(self.arg&0xff)]]) self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r6(self, cmd): # R6: Published RCA response # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (0 == card) # - Bits[45:40]: Command index (always 0b000011) # - Bits[39:24]: Argument[31:16]: New published RCA of the card # - Bits[23:08]: Argument[15:0]: Card status bits # - Bits[07:01]: CRC7 # - Bits[00:00]: End bit (always 1) if not self.get_token_bits(cmd, 48): return self.handle_common_token_fields() rca = self.get_token_data(8,23); self.puta(0, 15, [136, ['Card status bits', 'Status', 'S']]) self.puta(16, 31, [136, ['Relative card address 0x%X' %rca, 'Relative card address', 'RCA', 'R']]) self.putr(55, 'R6') self.token, self.state = [], 'GET COMMAND TOKEN' def handle_response_r7(self, cmd): # R7: Card interface condition # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (0 == card) # - Bits[45:40]: Command index (always 0b001000) # - Bits[39:20]: Reserved bits (all-zero) # - Bits[19:16]: Voltage accepted # - Bits[15:08]: Echo-back of check pattern # - Bits[07:01]: CRC7 # - Bits[00:00]: End bit (always 1) if not self.get_token_bits(cmd, 48): return self.handle_common_token_fields() self.putr(55, 'R7') # Arg[31:12]: Reserved bits (all-zero) self.puta(12, 31, [136, ['Reserved', 'Res', 'R']]) # Arg[11:08]: Voltage accepted v = ''.join(str(i[2]) for i in self.token[28:32]) av = accepted_voltages.get(int('0b' + v, 2), 'Unknown') self.puta(8, 11, [136, ['Voltage accepted: ' + av, 'Voltage', 'Volt', 'V']]) # Arg[07:00]: Echo-back of check pattern self.puta(0, 7, [136, ['Echo-back of check pattern', 'Echo', 'E']]) self.token, self.state = [], 'GET COMMAND TOKEN' def cal_arg(self): self.arg = 0 for i in range(32): self.arg = (self.arg<<1)+self.token[i+8][2] def is_pending(self, pins): if self.four_line: return sum(pins[2:6])>=4 else : return (pins[2] == 1) def get_data_start(self,pins): if self.data_received == [] : if not self.is_pending(pins): #still return false but store time data self.data_received = [[self.samplenum,1]] return False else : self.putdf( self.data_received[0][0], self.samplenum, ['Start of Data', 'Start', 'S'], True ) self.data_received = [[self.samplenum,pins[2:6]]] self.data_state = 'DATA' return True def data_value_4bit(self, data_pins): return data_pins[3]*8+data_pins[2]*4+data_pins[1]*2+data_pins[0]*1 def get_data_bytes(self, pins, bytes_required): self.data_received.append([self.samplenum, pins[2:6]]) samples_required = bytes_required * 2 if self.four_line else bytes_required * 8 if len(self.data_received) > samples_required: for i in range(bytes_required): if self.four_line: value = (self.data_value_4bit(self.data_received[i*2][1])<<4) | self.data_value_4bit(self.data_received[i*2+1][1]) self.putd( self.data_received[i*2][0], self.data_received[(i+1)*2][0], [hex(value)] ) else: value = sum([self.data_received[i*8+j][1][0]<<(7-j) for j in range(8)]) self.putd( self.data_received[i*8][0], self.data_received[(i+1)*8][0], [hex(value)] ) self.crc_value = [] for i in (range(4) if self.four_line else (0,)): data = [self.data_received[j][1][i] for j in range(samples_required)] self.crc_value.append(crc16(data)) #self.crc_value.append(data) self.data_received = [self.data_received[-1]] self.data_state = 'CRC' return True return False def get_crc_bytes(self, pins): self.data_received.append([self.samplenum, pins[2:6]]) if len(self.data_received) > 17: crc_str = [] crc_error = False for (i, crc_data) in enumerate(self.crc_value): value = sum([self.data_received[j][1][i]<<(15-j) for j in range(16)]) if value == self.crc_value[i]: crc_str.append(hex(crc_data)) else: crc_str.append(hex(value)+"("+hex(crc_data)+")") crc_error = True #crc_str.append(str(crc_data)) if crc_error: crc_str.insert(0, 'CRC Error:') self.putdf( self.data_received[0][0], self.data_received[-2][0], [' '.join(crc_str),'C Err'], False ) else: crc_str.insert(0, 'CRC:') self.putdf( self.data_received[0][0], self.data_received[-2][0], [' '.join(crc_str),'C'], True ) self.putdf( self.data_received[-2][0], self.data_received[-1][0], ['End','E'], True ) if self.data_crc_resp: self.data_state = 'CARD_BUSY' self.data_received = [self.data_received[-1]] else: self.data_state = 'IDLE' self.data_received = [] return True return False def wait_card_busy(self, pins): #format : if len(self.data_received) != 7 or pins[2] == 1: self.data_received.append([self.samplenum, pins[2]]) if len(self.data_received) == 9: self.putdf( self.data_received[2][0], self.data_received[3][0], ['Start','S'], True ) status = [ data[1] for data in self.data_received[4:7] ] if status == [1,0,1]: self.putd( self.data_received[3][0], self.data_received[6][0], ['CRC Correct', 'Correct'] ) elif status == [0,1,0]: self.putdf( self.data_received[3][0], self.data_received[6][0], ['CRC Error', 'Error','E'], False ) else: self.putdf( self.data_received[3][0], self.data_received[6][0], ['Unknown Status', 'Unknown','U'], False ) self.putdb( self.data_received[6][0], self.data_received[7][0], ['Card Busy', 'Busy','B'] ) self.putdf( self.data_received[7][0], self.data_received[8][0], ['End','E'], True ) self.data_state = 'IDLE' self.data_received = [] return True return False def decode(self): try: wait_cond = {1: 'r'} if self.rise_sample else {1: 'f'} while True: (cmd, clk, dat0, dat1, dat2, dat3) = self.wait(wait_cond) pins = (cmd, clk, dat0, dat1, dat2, dat3) #handle data lines if self.data_state == 'IDLE' or self.data_state == 'WAIT_FOR_START': self.get_data_start(pins) elif self.data_state == 'DATA': self.get_data_bytes(pins, self.data_bytes_required) elif self.data_state == 'CRC': self.get_crc_bytes(pins) elif self.data_state == 'CARD_BUSY': self.wait_card_busy(pins) # State machine. if self.state.startswith('GET RESPONSE'): if len(self.token) == 0: # Wait for start bit (CMD = 0). if cmd != 0: continue if not self.get_token_bits(cmd, 2): continue elif len(self.token) < 2: if not self.get_token_bits(cmd, 2): continue if self.token[1][2] == 1: #is a command rather than a respond, jump to cmd state self.state = 'GET COMMAND TOKEN' continue else: # Call the respective handler method for the response. s = 'handle_response_%s' % self.state[13:].lower() handle_response = getattr(self, s) handle_response(cmd) else : #if self.state == 'GET COMMAND TOKEN': if len(self.token) == 0: # Wait for start bit (CMD = 0). if cmd != 0: continue if not self.get_token_bits(cmd, 48): continue # Command tokens (48 bits) are sent serially (MSB-first) by the host # (over the CMD line), either to one SD card or to multiple ones. # # Format: # - Bits[47:47]: Start bit (always 0) # - Bits[46:46]: Transmission bit (1 == host) # - Bits[45:40]: Command index (BCD; valid: 0-63) # - Bits[39:08]: Argument # - Bits[07:01]: CRC7 # - Bits[00:00]: End bit (always 1) self.handle_common_token_fields() # Handle command. self.cmd_str = 'CMD%d (%s)' % (self.cmd, self.cmd_name(self.cmd)) if not self.is_acmd: # normal command if self.cmd in self.cmd_list: self.state = 'HANDLE CMD%d' % self.cmd handle_cmd = getattr(self, 'handle_cmd' + str(self.cmd)) else: self.state = 'HANDLE CMD999' self.putc(self.cmd, 'CMD%d' % self.cmd) handle_cmd = getattr(self, 'handle_cmd999') else: # ACMD self.cmd_str = 'A' + self.cmd_str if self.cmd in self.acmd_list: self.state = 'HANDLE ACMD%d' % self.cmd handle_cmd = getattr(self, 'handle_acmd' + str(self.cmd)) else: self.state = 'HANDLE ACMD999' self.putc(self.cmd, 'ACMD%d' % self.cmd ) handle_cmd = getattr(self, 'handle_acmd999') self.data_state = 'WAIT_FOR_START' self.data_received = [] # Default to negotiated I/O block length so unknown commands # still collect a full data packet instead of truncating at 4 bytes. self.data_bytes_required = self.io_block_len self.data_crc_resp = False self.cal_arg() # Call the respective handler method for the command. handle_cmd() # Leave ACMD mode again after the first command after CMD55. if self.is_acmd and not self.cmd in (55, 63): self.is_acmd = False except: self.putlog(traceback.format_exc())